The Flex PolyPro Double Wall Vent Pipe measures 15 meters (49.2 feet) in length and features an 80mm (3 inch) diameter, making it ideal for high-efficiency hot water systems. Manufactured by Hot Water Products LLC, this vent pipe is designed for superior insulation and durability, ensuring safe venting of exhaust gases. Its flexible design allows for easy installation in tight spaces, while the double wall construction enhances safety and performance. This vent pipe complies with industry standards, making it a reliable choice for your hot water applications.